Cannot send mail to att.net, sbcglobal.net, bellsouth.net, or any AT&T domains. Please help!
Hello AT&T Admin and/or Postmaster,
Over the past week, any emails sent to @att.net, @sbcglobal.net, @bellsouth.net, or any AT&T domains from my company's mail server have been rejected/blocked. When checking our domain/hostnames through places like MXToolbox, we are not listed on any searchable blacklists as being blocked.
Can someone please provide some more information and possibly a resolution in regards to this problem? At the very least, is there a support number we can call, as emailing email@example.com is leading to nothing but dead-ends. This is affecting our business negatively, throwing off our users work flow and productivity, and tarnishing the company's reputation with our clients/consultants.
Your assistance would be greatly appreciated.